Cell Theory

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What is Cell Theory?

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Cell Theory is a fundamental concept in biology that states: 1) All living organisms are composed of one or more cells. 2) The cell is the basic unit of life. 3) All cells arise from pre-existing cells.

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Who was Robert Hooke?

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Robert Hooke was a scientist who first coined the term 'cell' after observing the box-like structures in cork under a microscope.

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What did Rudolph Virchow contribute to Cell Theory?

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Rudolph Virchow contributed to Cell Theory by stating that all cells come from pre-existing living cells.

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What is the significance of the microscope in cell biology?

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The microscope allowed scientists to observe cells for the first time, leading to the discovery of cell structure and the development of Cell Theory.

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What is spontaneous generation?

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Spontaneous generation is the outdated theory that life can arise from non-living matter.

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Who disproved spontaneous generation?

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Francesco Redi and Louis Pasteur are known for their experiments that disproved the theory of spontaneous generation.

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What are prokaryotic cells?

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Prokaryotic cells are simple, single-celled organisms that lack a nucleus and membrane-bound organelles, such as bacteria.

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What are eukaryotic cells?

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Eukaryotic cells are complex cells that contain a nucleus and membrane-bound organelles, found in plants, animals, fungi, and protists.

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What is the basic unit of life?

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The cell is considered the basic unit of life, as it is the smallest structure that can perform all life processes.

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How do cells reproduce?

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Cells reproduce through processes such as mitosis (for somatic cells) and meiosis (for gametes), where one cell divides to form new cells.